Hi ! I use SquidNT on a Windows 2000 Server and I have a problem with Active Directory authentification. Could you help me ? There?s my problem : I use the auth_param basic program for authenticate my user, like this : auth_param basic program c:/squid/libexec/squid_ldap_auth.exe -R -b "dc=domaine,dc=fr" -f "(&(objectclass=person) (sAMAccountName=%s) (memberof=CN=leweb,OU=USERS,DC=domaine,DC=fr))" -D "cn=Administrateur,cn=Users,dc=domaine,dc=fr" -w "passAdmin" -h server_ip When I test this code in command line, I have an ?OK?. But when I try to connect with Squid, I have an error in the cache.log file. The error is : squid_ldap_auth: WARNING, LDAP search error 'Erreur de filtre' in French : ?filter error? Could you help me ? Thanks. Jérôme PS : sory for my poor english